Which components are involved in the in-flight relighting procedure?

• A. Open another tank valve, open the regulator or blast valve, and light main jets with reduced flow
• B. Close all valves and restart
• C. Cut power and ignore the burner
• D. Use a separate back-up burner not connected to the main line

Answer: (A)

Relighting in flight is about reigniting the burner safely by reintroducing fuel through the main line in a controlled way after the flame has gone out. The best approach uses a fresh fuel supply and careful flow control to avoid a sudden, dangerous flare.

Open another tank valve to ensure a reliable fuel supply so the burner can be reignited without starving the system. Use the regulator or blast valve to regulate the gas pressure and flow to the burner, preventing an overwhelming surge when reigniting. Light the main jets with reduced flow first, so you can establish a stable flame without overfiring the system. Once the flame catches and is steady, you can gradually increase to normal operating flow.

Closing all valves, cutting power, or ignoring the burner wouldn’t supply fuel or produce ignition, so they won’t work for relighting. A separate back-up burner not connected to the main line isn’t part of the standard in-flight relight procedure.